I joined to kickstart my fiction writing. I'm currently in the middle of a story that's taking a lot more planning and thinking than the previous two did, and that's slowed me right down. The planning and thinking don't count on 200wad but it's work on the story nonetheless. I'm hoping once I get the structure and outline down I can start cranking out 200-word chunks of the new story as well.
That said, it doesn't have to be fiction to be creative. Of the seven collections of work I manage on here thus far, four are fiction, two are buckets for what I would still consider creative works, and one is just the crap bucket.
As for feeling a part of the community, I notice that I feel more a part of the community not when I write but when I read. Often, especially lately, I have only had time for a quick 200 words and no time to consume, comment or reply. This has left me feeling less a part of the community. The Slack group helps but it's a rather small subset of the larger 200wad community. The larger the user base of 200wad becomes, the harder it is to consume others' content. This is why I've long asked for an RSS feed of my followed writers feed, so I can manage a backlog of their posts in a manageable reading tool (I used Feedbin). Same for feeds of specific collections, so I could catch up on more organized creative work in a centralized place instead of having to scour a user's profile for bits of their stories.